Low Temperature Drying of Japanese Cedar by a Principle of the Same Direction Transfer of Heat and Moisture and Its Effect on the Reduction of Environmental Burden

热湿同向传递原理的日本柳杉低温干燥及其减轻环境负担的效果

• 批准号: 24651067
• 负责人: TANIGUCHI SHOJI
• 金额: $ 2.58万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24651067/
• 关键词: 木材乾燥; 低温乾燥; 水分と熱の並び流れ; 乾燥変形; 精油成分; 林業再生; CO2排出削減; 木材の乾燥; 乾燥による変形

The characteristics of low temperature wood drying has been investigated taking into account the structural anisotropy of cedar lumber and the principle of the same direction transfer of heat and moisture. Considerable changes in drying rate and drying shrinkage with the direction of moisture transfer and the texture of wood were observed in the experiment of one-directional drying under a constant temperature gradient. In the case of the same direction transfer of heat and moisture, small local difference was found in moisture content and drying shrinkage, of which results were successfully reproduced by a moisture diffusion model including vaporization and condensation of water. Finally, it was shown that the content of oil in wood was changed with the drying temperature.

考虑到雪松木材的结构各向异性和热湿同向传递的原理，研究了低温木材干燥的特性。在恒定温度梯度下的单向干燥实验中，木材的干燥速率和干燥干缩率随水分传递方向和木材质地的变化较大。在热量和水分同向传递的情况下，含水率和干燥收缩的局部差异很小，这一结果被包括水的蒸发和冷凝的水分扩散模型成功地再现。结果表明，木材的含油量随干燥温度的升高而变化。

项目成果

木材乾燥における含有水分の移動現象に関する研究

木材干燥过程中含水率运动现象的研究

• 发表时间: 2013
• 作者: 中屋裕登;和賀春佳;嶋崎真一;谷口尚司
• 通讯作者: 谷口尚司